Wire box threading auxiliary device

Abstract

The utility model relates to an auxiliary threading device for a wire box, which is clamped and fixed in the wire box and comprises two fixing blocks which are vertically arranged in parallel, and the upper side and the lower side of each fixing block are fixedly connected with springs; pressing blocks are respectively fixed at the free ends of the upper side spring and the lower side spring, and the front ends of the pressing blocks extend towards the outer side of the wire box; the overall height of the auxiliary device is adjusted through the pressing blocks and the springs, and the pressing blocks on the upper side and the lower side are clamped and fixed to the inner wall of the wire box. A roller shaft is rotatably arranged between the two fixing blocks, the axial direction of the roller shaft is perpendicular to the wire outlet direction of a wire hole in the wire box, and the roller surface of the roller shaft and the wire hole are located on the same vertical plane. The roll shaft is used for providing a rolling fulcrum for the electric wire entering the wire box, and when the electric wire is pulled by the pull wire, the electric wire can pass through the threading hole in a linear state under the guide of the path of the roll shaft and smoothly enter the pre-embedded threading pipe, so that the electric wire can be prevented from being blocked at the position of the threading hole, and the cable is protected; labor cost is reduced, and threading construction is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of wire threading construction, in particular to a wire box wire threading auxiliary device. Background Art

[0002] In building electrical construction, wire conduits and concealed junction boxes are usually pre-buried in the wall. Iron or steel wires with a diameter of 1.2mm to 2.0mm are inserted into the conduit as traction wires. One end of the traction wire is bent into an unsealed circle, and then the traction wire is inserted into the conduit using a threader. A margin should be left at both ends of the pipe for subsequent threading. When threading wires in the conduit, tie one end of the wire to one end of the traction wire, and then pull the traction wire from the other end to pull the wire into the conduit.

[0003] During the dragging process, the angle between the wire and the threading path is small, and the surface of the wire directly rubs against the wire hole of the terminal junction box, which can easily cause jamming and damage the wire surface. Therefore, one worker is required to pull the traction wire, and another worker assists in feeding the wire at the wire hole to avoid wire jamming. This threading method has low threading efficiency and increases labor costs. Utility Model Content

[0004] The utility model aims to solve the above-mentioned problems of low threading efficiency and waste of manpower, thereby providing a wire box threading auxiliary device.

[0005] The utility model solves the above problems and adopts the following technical solutions:

[0006] A wire box threading auxiliary device is fixed in the wire box, comprising two vertically parallel fixed blocks, the upper and lower sides of the fixed blocks are fixedly connected with springs; the free ends of the upper spring and the lower spring are respectively fixed with pressing blocks, and the front ends of the pressing blocks extend to the outside of the wire box; the overall height of the auxiliary device is adjusted by the pressing blocks and the springs, and the upper and lower pressing blocks are fixed on the inner wall of the wire box;

[0007] A roller is rotatably arranged between the two fixed blocks, the axial direction of the roller is perpendicular to the wire outlet direction of the wire hole on the wire box, and the roller surface and the wire hole are on the same vertical plane.

[0008] Compared with the prior art, the utility model adopting the above technical solution has the following beneficial effects:

[0009] The device is fixed to the inner wall of the wire box by the pressing blocks on the upper and lower sides, so that the roller can be adjusted to a position vertically corresponding to the wire threading hole of the wire box. The roller is used to provide a rolling fulcrum for the wires entering the wire box. When the wires are pulled by the traction line, the wires can maintain a straight state through the threading holes and smoothly enter the pre-buried threading tube under the guidance of the path of the roller, which can prevent the wires from getting stuck at the threading holes and protect the cables. The auxiliary device can replace manual labor to assist in line-alignment at the insertion end, thereby reducing labor costs and making threading construction more convenient.

[0010] As a preferred embodiment, a further technical solution of the utility model is:

[0011] The fixing block is set in a cylindrical shape, and the upper and lower ends of the fixing block are both provided with axial spring grooves, the fixed ends of the springs are fixed on the bottom surfaces of the spring grooves, and the free ends of the springs extend outward from the fixing block along the axial direction of the fixing block. The fixing block provides a fixing accommodating groove for the spring, and the upper and lower springs are extended and retracted with the fixing block as the center.

[0012] The pressing block is set as a U-shaped structure, and the bottom surfaces of its two parallel clamping edges are respectively fixed to the free ends of the two springs on the same side, and the top surface of the middle connecting edge is provided with grooves at equal intervals, and the width of the grooves fits the width of the fingers. This structure of the pressing block is convenient for adjusting the spring expansion and contraction amount by one hand, and the device is clamped in the wire box. The middle connecting edge is the finger pressing part, and the grooves are provided to increase the comfort of the fingers when pressing.

[0013] The top surfaces of the two clamping edges of the pressing block are provided with a plurality of strip grooves, the direction of the strip grooves is consistent with the axial direction of the roller, and one strip groove of each clamping edge is clamped with the edge of the wire box. Providing the strip grooves and clamping them with the edge of the wire box can increase the stability of the clamping of the pressing block and the wire box. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0015] Figure 2 It is a top view of the utility model;

[0016] Figure 3 It is a side sectional view of the fixing block of the utility model;

[0017] Figure 4 It is a side view of the roller shaft of the utility model;

[0018] Figure 5 This is a schematic diagram of the utility model being fixed in a wire box and threading the wires;

[0019] In the figure: 1. pressing block; 11. strip groove; 12. groove; 2. roller; 21. bearing; 22. shaft core; 3. fixing block; 31. spring groove; 4. spring; 5. embedded wire tube; 51. wire hole; 6. wire; 7. wire box. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with embodiments, the purpose of which is only to provide a better understanding of the content of the present invention. Therefore, the examples given do not limit the protection scope of the present invention.

[0021] See attached Figure 1-5 The present embodiment discloses a wire box threading auxiliary device, which is fixed in the wire box 7, and includes two vertically parallel fixed blocks 3, and the upper and lower sides of the fixed blocks 3 are fixedly connected with springs 4; the free ends of the upper spring 4 and the lower spring 4 are respectively fixed with pressing blocks 1, and the front ends of the pressing blocks 1 extend to the outside of the wire box 7; the overall height of the auxiliary device is adjusted by the pressing blocks 1 and the springs 4, and the upper and lower pressing blocks 1 are fixed on the inner wall of the wire box 7;

[0022] A roller shaft 2 is rotatably arranged between the two fixed blocks 3, the axial direction of the roller shaft 2 is perpendicular to the wire outlet direction of the wire hole on the wire box 7, and the roller surface and the wire hole are in the same vertical plane.

[0023] In this embodiment, the device is fixed to the inner wall of the wire box 7 by the pressing blocks 1 on the upper and lower sides, so that the roller 2 can be adjusted to a position vertically corresponding to the wire threading hole 51 of the wire box 7. The roller 2 is used to provide a rolling fulcrum for the wire 6 entering the wire box 7. When the wire 6 is pulled by the traction line, under the guidance of the path of the roller 2, the wire 6 can maintain a straight state through the wire threading hole 51 and smoothly enter the pre-buried wire threading tube 5, which can prevent the wire 6 from getting stuck at the position of the wire threading hole 51 and protect the cable. The auxiliary device can replace manual labor to assist in line alignment at the insertion end, thereby reducing labor costs and making the threading construction more convenient.

[0024] In this embodiment, the fixed block 3 is set to a cylindrical structure, and the upper and lower ends of the fixed block 3 are both provided with axial spring grooves 31, the depth of each spring groove 31 is the same, the diameter of each spring groove 31 is larger than the diameter of the spring 4, and the depth of the spring groove 31 is not greater than one-fourth of the length of the spring 4, so that the spring 4 can be extended and retracted in the spring groove 31; preferably, the spring 4 is selected to have good bending resistance, the fixed end of the spring 4 is fixed to the bottom surface of each spring groove 31 by glue or other means, and the free end of the spring 4 extends outward from the fixed block 3 along the axial direction of the fixed block 3. When the spring is extended and retracted, it can only be extended and retracted vertically due to the restriction of the spring groove 31, and will not bend. The fixed block 3 provides a fixed accommodating groove for the spring 4, and the upper and lower springs 4 are extended and retracted with the fixed block 3 as the center. The length of the spring 4 of this device can be changed according to the height of the wire box 7, and the size of the wire box 7 in actual use shall prevail.

[0025] In this embodiment, the pressing block 1 is set as a U-shaped structure with a certain thickness, and its two parallel clamping edge bottom surfaces are fixed to the free ends of the two springs 4 on the same side respectively. The upper pressing block 1 is set in parallel with the lower pressing block 1, and the top surface of the middle connecting edge is provided with grooves 12 at equal intervals. The width of the grooves 12 fits the width of the fingers. Specifically, the width of the grooves 12 is set to 10mm-20mm to meet the width of most people's fingers. This structure of the pressing block 1 is convenient for one-handed operation to adjust the extension and contraction of the spring 4, and the device is clamped in the wire box 7. The middle connecting edge is the finger pressing part, and the grooves 12 are set to increase the comfort of the fingers when pressing.

[0026] In this embodiment, the top surfaces of the two clamping edges of the pressing block 1 are provided with a plurality of strip grooves 11, the direction of the strip grooves 11 is consistent with the axial direction of the roller shaft 2, and one strip groove 11 of each clamping edge is engaged with the edge of the wire box 7. Providing the strip grooves 11 and engaging them with the edge of the wire box 7 can increase the stability of the clamping of the pressing block 1 and the wire box 7.

[0027] In this embodiment, the roller shaft 2 includes bearings 21 at both ends and an axis core 22 between the two bearings 21. A sleeve is fixed on the outer wall of the two fixed blocks 3 at relative positions. The outer sections of the two sleeves are fixed to the two fixed blocks 3 respectively, and the inner sections of the two sleeves are fixed to the outer rings of the two bearings 21 respectively. The two ends of the axis core 22 are respectively inserted into the inner rings of the two bearings 21, so that the axis core 22 and the fixed block 3 are rotatably connected.

[0028] Before threading, place the device in the wire box 7 first, press the upper and lower pressing blocks 1 at the same time, the spring 4 contracts to change the height of the device, and insert the device into the wire box 7, so that the roller surface of the roller shaft 2 faces the wire hole of the wire box 7, release your hand, and when the spring 4 rebounds, the upper and lower pressing blocks 1 are clamped to the upper and lower inner walls of the wire box 7; when threading, make the wire 6 fit the distal roller surface of the roller shaft 2, the upper end of the wire 6 is connected to the traction line, and the worker pulls the traction line at the other end of the traction line to drive the wire 6 to move into the pre-buried threading tube 5, and the roller shaft 2 rotates driven by the wire 6 and provides a rolling fulcrum for the wire 6.

[0029] The above description is only a preferred feasible embodiment of the present utility model, and does not limit the scope of rights of the present utility model. All equivalent changes made using the contents of the present utility model specification and its drawings are included in the scope of rights of the present utility model.

Claims

1. A wire box threading auxiliary device, fixed in the wire box (7), characterized in that: The auxiliary device comprises two fixing blocks (3) arranged vertically and in parallel, wherein the upper side and the lower side of the fixing blocks (3) are both fixedly connected to springs (4); free ends of the upper spring (4) and the lower spring (4) are respectively fixed with pressing blocks (1), and the front ends of the pressing blocks (1) extend toward the outside of the wire box (7); the overall height of the auxiliary device is adjusted by the pressing blocks (1) and the springs (4), and the upper and lower pressing blocks (1) are clamped on the inner wall of the wire box (7); A roller shaft (2) is rotatably arranged between the two fixed blocks (3), the axial direction of the roller shaft (2) is perpendicular to the wire outlet direction of the wire hole on the wire box (7), and the roller surface and the wire hole are located on the same vertical plane.

2. The wire box threading auxiliary device according to claim 1, characterized in that: The fixing block (3) is arranged in a cylindrical shape, and an axial spring groove (31) is provided at the upper end and the lower end of the fixing block (3). The fixed end of the spring is fixed on the bottom surface of each spring groove (31), and the free end of the spring (4) extends outward from the fixing block (3) along the axial direction of the fixing block (3).

3. The wire box threading auxiliary device according to claim 1, characterized in that: The pressing block (1) is configured as a U-shaped structure, wherein the bottom surfaces of the two parallel clamping edges are respectively fixed to the free ends of the two springs (4) on the same side, and the top surface of the middle connecting edge is provided with grooves (12) at equal intervals, and the width of the grooves (12) fits the width of a finger.

4. The wire box threading auxiliary device according to claim 1, characterized in that: The top surfaces of the two clamping edges of the pressing block (1) are provided with a plurality of strip grooves (11), the direction of the strip grooves (11) is consistent with the axial direction of the roller shaft (2), and one strip groove (11) of each clamping edge is clamped with the edge of the wire box (7).

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